Where the Mastiff came from
The Mastiff is one of the oldest dog types in Britain. The name has been known on the British Isles for thousands of years. One account says the Romans valued these dogs and took some back to Italy. In the late 1100s King Henry II ordered Mastiffs to be "lawed," which meant removing toes to keep them from hunting.
The breed became the dog of country estates, guarding property and people. One popular legend says a Mastiff guarded Sir Piers Legh at the Battle of Agincourt in the early 1400s, and that their line led to the Lyme Hall Mastiffs. Both world wars were hard on the breed, because owners often did not have enough food for dogs that weighed as much as some people.
After World War II, North American fans sent Mastiffs back across the Atlantic to help rebuild the breed in Britain. The AKC recognized the Mastiff in 1885, and the Mastiff Club of America was founded in 1929. Today they are calm family dogs, still happy to keep watch.
- Ancient Mastiff-type guardian dogs are known in Britain
- Late 1100s Henry II orders Mastiffs to be lawed
- 1885 AKC recognizes the Mastiff
- 1929 The Mastiff Club of America is founded
- After WWII North American dogs help rebuild the breed in Britain
The job a Mastiff was bred for
The job was guarding the estate by being large and steady, not by constant action. That shaped a calm, low energy dog who watches from the porch more than they patrol. Many Mastiffs are gentle and a little slow to get moving when they would rather rest.
Sports that fit a Mastiff
- Scent work. A low impact way to give a big dog a real job
- Tracking. They enjoy a slow, steady trail
- Carting. Their strength suits pulling a light cart when properly conditioned
- Therapy work. Calm, gentle dogs can be great visitors
- Rally. Low impact exercises build teamwork without strain
Training tips for a Mastiff
- Use food rewards and patience. They are sensitive and do not respond well to pressure.
- Teach loose leash walking early, before they are too heavy to guide.
- Practice manners at the door and with guests, rewarding calm greetings.
- Keep sessions short and gentle on the joints.
Body and health
Giant size means joints and growing bones need protection, so skip jumping and long hard runs. Their short muzzle and heavy build make heat a real danger, so exercise in cool hours.
Fun fact. The heaviest dog on record was a Mastiff named Zorba. Guinness listed Zorba in 1989 at well over 300 pounds.
Breed is where we start
A study of more than 18,000 dogs found breed explains only about 9 percent of the differences in behavior between dogs (Morrill and others, Science, 2022). So your Mastiff is a starting guess, not a label. We find the drive your dog actually runs on, give it a job, and teach you to read them.
Looking for a different breed? See what 75 breeds were bred to do.